Top 5 Basement Renovation
in Oshawa
We compared 5 Basement Renovation serving Oshawa, Ontario using publicly available business information, including customer reputation, local presence and documented services. Across the businesses featured here, documented specialties include Basement renovations, Residential renovations, and Commercial renovations.
≈ Oshawa’s featured basement renovation have a FiveBest Score in line with the Ontario benchmark.
HH renovation & general contracting Inc lists complete basement work on its website for residential and commercial renovation clients. Its documented interior services, including electrical work, plumbing, flooring and painting, can be relevant to a basement project requiring several scopes coordinated by one contractor in Ajax.
Residential renovations · Commercial renovations · Home interiors
Detailed FiveBest Research is not yet available for this business.
Full basement renovation and remodeling is a documented service at Paradisaic Building Group, based in Oshawa. Its Durham Region work includes complete construction and design collaboration, with basement plans tailored for uses such as family rooms, storage areas and home gyms.
Full basement renovations and remodeling · Complete basement construction · Basement design planning
Basement renovations are a documented service of Elite Star General Contracting Ltd, which is listed in Oshawa. The company’s service scope also includes interior renovations and basement or foundation water-infiltration work, providing a relevant option for basement projects with related renovation or moisture-repair requirements.
Basement renovations · Interior renovations · Basement and foundation water-infiltration work
Henley Contracting Ltd. renovates basements in Oshawa and explicitly lists the city among its Durham Region service locations. The company describes transforming unfinished basements into additional bathrooms, second living areas or home gyms, and handles projects from concept to completion.
Basement renovations · Basement bathroom additions · Second living area conversions
Oshawa basement renovation are in line with the Ontario benchmark
Featured basement renovation in Oshawa have a median FiveBest Score™ of 70/100, compared with 69/100 for featured basement renovation across Ontario.
Among nearby FiveBest markets, basement renovation in Whitby (71/100) scores higher, while those in Ajax (65/100) and Clarington (64/100) score below Oshawa.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched Basement Renovation in Oshawa
FiveBest reviews publicly available information for Basement Renovation serving Oshawa.
- Google rating and review history
- Documented services
- Years in business when available
- Oshawa and surrounding service coverage
- Business website and online presence
- Independent reputation signals when available
Research last updated: September 2026
Typical Basement Renovation Price Ranges
Price ranges are based on typical industry averages. Actual costs may vary depending on basement size, existing conditions, project scope, materials, plumbing, electrical work, insulation, flooring, permits and local market conditions.
- Basic basement finish $25,000–$55,000
- Full basement renovation $55,000–$120,000+
- Bathroom addition $12,000–$35,000
- Flooring $4–$12/sq ft
- Drywall & finishing $8,000–$25,000+
Common Services
- Basement renovation in Oshawa
- Basement finishing in Oshawa
- Basement remodeling in Oshawa
- Basement bathroom renovation in Oshawa
- Basement bedroom construction in Oshawa
- Basement family room renovation in Oshawa
FiveBest Match™
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FiveBest Match™ — Coming Soon 🔒How to Choose a basement renovation contractor in Oshawa
Compare basement renovation contractors in Oshawa for finished basements, family rooms, bedrooms, bathrooms, home offices, flooring, insulation, drywall, ceilings and complete basement remodeling. FiveBest helps homeowners compare selected local contractors based on relevant services, reputation and local presence.
Compare selected basement renovation contractors in Oshawa for finished basements, family rooms, bedrooms, bathrooms, flooring, insulation, drywall and complete basement remodeling.
Investigate leaks, foundation moisture, drainage or dampness before covering walls and floors.
Ask about permits, bedroom egress, ceiling height, alarms and other requirements relevant to the planned use.
Compare insulation, air sealing and wall assemblies appropriate to the existing basement conditions.
Confirm framing, insulation, drywall, ceilings, flooring, electrical, plumbing and finishing allowances.
Confirm regulated electrical, plumbing or HVAC work is completed by the appropriate qualified trades.
Ask how unexpected moisture, foundation, plumbing or framing issues will be documented and priced.
What Affects Basement Renovation Costs
- Basement size
- Existing condition
- Moisture or water issues
- Framing and insulation
- Electrical and lighting
- Plumbing and bathroom work
- Flooring and ceilings
- Bedrooms and egress requirements
- Permits and inspections
- Level of finishes
Questions to Ask a Basement Renovation Contractor
- Have moisture or water issues been assessed?
- What insulation and wall assembly will be used?
- Are permits or inspections required for the planned work?
- If adding a bedroom, how will egress requirements be addressed?
- Who performs electrical, plumbing and HVAC work?
- What is included for flooring, ceilings and finishes?
- How are hidden conditions and change orders handled?
- What workmanship warranty is provided?
Frequently Asked Questions
Basement renovation costs in Oshawa depend on the size and existing condition of the space, project scope, materials, flooring, insulation, electrical and plumbing work, bathrooms, structural changes and finishing requirements.
A basement renovation can include framing, insulation, drywall, ceilings, flooring, lighting, electrical work, plumbing, bathrooms, bedrooms, storage and living areas. The exact scope depends on the existing basement and intended use.
Permit requirements depend on the municipality and the work involved. Structural changes, plumbing, electrical work, new bedrooms and changes to exits or occupancy may require permits or inspections. Confirm local requirements before work begins.
A basement may be suitable for a bedroom when applicable requirements for ceiling height, ventilation, smoke and carbon monoxide alarms, emergency egress and other building-code provisions can be met. A contractor can help assess the existing space.
Existing leaks, moisture, drainage issues or signs of water infiltration should be investigated before finishing the basement. Covering an unresolved moisture problem can lead to damage to new materials and finishes.
Compare experience with basement projects, project scope, materials, permits, insulation and moisture considerations, written estimates, timelines, warranties and recent local reviews.